I know my '84 22R 5 speed 4runner has a 180* t-stat. I have heard that the dealership can get (but doesn't stock)a 160* t-stat for the 22 series motors. I called the dealership but as always hes a real 'knowledgable' guy and can't help me at all. So i am curious if anyone knows what models had the 160* t-stats so i can order that one. Me personally, I assume they probably came in the turbo's but am looking for some clarification or any help. Let me know if you guys find anything, until then, im off to keep looking on google.